what the hell is a nug i keep hearin people say it but i dunno what it means. im good on most other words its just this one i got trouble with.
1 Improper use of contact lenses or steroid eyedrops can lead to fungal infections, which in turn can cause corneal ulcers. Also, a corneal injury that results in plant material getting into the eye can lead to fungal keratitis.  Acanthamoeba are microscopic, single-celled amoeba that can cause human infection.
A corneal ulcer is a sight-threatening, abscess-like infection of the cornea, usually caused by trauma to the eye or an untreated eye infection. If not treated promptly, corneal ulcers can lead to complete vision loss. Eye pain, redness, swollen eyelids and thick eye discharge are characteristic of a corneal ulcer.